Limit your search
Topic
- Electric substations 31
- Electric power distribution 29
- Energy industries 29
- Northwestern Electric Company 28
- Electric apparatus and appliances 21
- Electric switchgear 13
- Piping 10
- Electric machinery 8
- Boilers 2
- Electric cables 2
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Format
- image/tiff 31
Collection
- Angelus Studio photographs, 1880s-1940s 31